Really? They literally had Tony Stark poking and prodding him without getting a reaction and asking "What's your secret?" It took an explosion almost knocking him out completely to shake him and when that happened even Black Widow and everyone on the helicarrier was in danger and he knew it. I felt that was one of the movie's better points which made the "I'm always angry." line make me go "Duh! I feel like an idiot for not figuring this out."

Idunno. I never once thought they were building up to him being in control. Just the answer to how he's been doing it. Dude was pretty zen from the moment Black Widow ran into him in India.

__________________"Why are you trying to kill my kid?! You know what? I don't care. You got some beef with him or me? Whatever. You trying to start a rogues gallery of some sort? I ain't got half as much patience as Batman or The Flash. If he dies...so do you." - Green Arrow